private void SendItems(List <SendItem> sendItemList)
{
if (sendItemList.Count < 0)
{
return;
}
var historyGroup = _liteDb.Database.GetCollection <HistoryGroup>().FindById(_currentHistoryGroupId);
// 添加到栈中
Stack <SendItem> sendItemStack = new Stack <SendItem>();
// 栈是先进后出，所以要倒转一下
sendItemList.Reverse();
sendItemList.ForEach(item => sendItemStack.Push(item));
// 获取发件人
List <SendBox> senders = _liteDb.Fetch <SendBox>(sb => historyGroup.senderIds.Contains(sb._id));
// 开始发送邮件，采用异步进行发送
// 一个发件箱对应一个异步
List <SendThread> sendThreads = senders.ConvertAll(sender =>
{
var sendThread = new SendThread(_userId, sender, _liteDb);
sendThread.SendCompleted += SendThread_SendCompleted;
return(sendThread);
});
// 开始运行
Task.WhenAll(sendThreads.ConvertAll(st => st.Run(sendItemStack))).ContinueWith((task) =>
{
// 执行回调
// 发送关闭命令
SendStatus = SendStatus.SendFinish;
// 对于已经完成的，要更新数据的状态
var history = _liteDb.SingleById <HistoryGroup>(_currentHistoryGroupId);
if (history != null)
{
// 更新状态
history.sendStatus = SendStatus.SendFinish;
_liteDb.Update(history);
}
// 发送完成数据
SendingProgressInfo = new SendingProgressInfo()
{
historyId = _currentHistoryGroupId,
index = sendItemList.Count,
total = sendItemList.Count,
};
SendCompleted?.Invoke();
});
}
private void SendThread_SendCompleted(SendResult obj)
{
// 单个发送结束后的事件
// 发送进度条
SendingProgressInfo = new SendingProgressInfo()
{
total = SendingProgressInfo.total,
index = SendingProgressInfo.index + 1,
historyId = _currentHistoryGroupId,
receiverEmail = obj.SendItem.receiverEmail,
receiverName = obj.SendItem.receiverName,
SenderEmail = obj.SendBox.email,
SenderName = obj.SendBox.userName
};
}
/// <summary>
/// 对发件进行预处理
/// </summary>
/// <param name="sendItems"></param>
private void PreHandleSendItems(List <SendItem> sendItems)
{
if (sendItems.Count < 1)
{
return;
}
// 获取设置
Setting setting = _liteDb.SingleOrDefault <Setting>(s => s.userId == _userId);
// 设置发送的内容
if (setting.sendWithImageAndHtml)
{
SendStatus |= SendStatus.AsImage;
}
else
{
SendStatus |= SendStatus.AsHtml;
}
// 奇偶混发
for (int index = 0; index < sendItems.Count; index++)
{
var sendItem = sendItems[index];
// 偶数发图片
// 如果被设置了发送类型，就按设置的发送类型进行发送
if (index % 2 == 0 && setting.sendWithImageAndHtml && sendItem.sendItemType == SendItemType.none)
{
sendItem.sendItemType = SendItemType.dataUrl;
}
}
// 初始化进度
var sendingInfo0 = new SendingProgressInfo()
{
historyId = _currentHistoryGroupId,
index = 0,
total = sendItems.Count,
};
SendingProgressInfo = sendingInfo0;
}
/// <summary>
/// 开始发送未发送成功的数据
/// </summary>
/// <param name="sendItemIds">传入需要重新发送的id</param>
/// <returns></returns>
public bool StartSending()
{
// 判断是否结束
if (!SendStatus.HasFlag(SendStatus.SendFinish))
{
return(false);
}
var allSendItems = _liteDb.Fetch <SendItem>(item => item.historyId == _currentHistoryGroupId);
var sendItems = allSendItems.FindAll(item => !item.isSent);
// 判断数量
if (sendItems.Count < 1)
{
// 发送完成的进度条
SendingProgressInfo = new SendingProgressInfo()
{
total = 1,
index = 1,
};
return(true);
}
else
{
// 更改进度
SendingProgressInfo = new SendingProgressInfo()
{
total = sendItems.Count,
index = 0,
};
}
// 判断是发送还是重发
if (allSendItems.Count == sendItems.Count)
{
SendStatus = SendStatus.Sending;
}
else
{
SendStatus = SendStatus.Resending;
}
// 更改数据库中的状态
var history = _liteDb.SingleById <HistoryGroup>(_currentHistoryGroupId);
if (history == null)
{
return(false);
}
history.sendStatus = SendStatus;
_liteDb.Update(history);
// 判断需要发送的数量
if (allSendItems.Count < 1)
{
history.sendStatus = SendStatus.SendFinish;
_liteDb.Update(history);
// 获取重发完成的信息
var sendingInfo = new SendingProgressInfo()
{
historyId = _currentHistoryGroupId,
index = 1,
total = 1,
};
SendingProgressInfo = sendingInfo;
return(false);
}
// 处理每条邮件
PreHandleSendItems(sendItems);
// 开始发件
SendItems(sendItems);
return(true);
}